Track the latest renovation and development activity in Mayfair. We monitor planning applications across Westminster to help you understand what's possible on your street.
| Address | Project Type | Status | Date | Description |
|---|---|---|---|---|
| 45 Charles Street, W1 | Demolition & Rebuild | Under Review | 25 Mar 2026 | Demolition of existing structure and replacement with contemporary dwelling |
| 3 South Audley Street, W1 | New Build | Approved | 19 Mar 2026 | Construction of new mews house on former garage site |
| 20 Waverton Street, W1 | Full Refurbishment | Approved | 9 Mar 2026 | Internal reconfiguration and modernisation of all floors with new kitchen and bathrooms |
| 6 Hay's Mews, W1 | Roof Terrace | Approved | 28 Feb 2026 | Formation of roof terrace at rear second floor level with glass balustrade |
| 53 Curzon Street, W1 | Mansard Extension | Approved | 17 Feb 2026 | Full rear mansard extension creating new bedroom and bathroom |
| 22 Charles Street, W1 | Side Return Extension | Refused | 15 Feb 2026 | Side return and rear extension creating open-plan kitchen-dining space |
| 11 Mount Street, W1 | Full Refurbishment | Approved | 10 Feb 2026 | Full renovation of period property including restoration of original features |
| 10 Farm Street, W1 | Listed Building Consent | Approved | 14 Jan 2026 | Reinstatement of original period features including cornicing and fireplaces |
| 75 Mount Street, W1 | Roof Terrace | Approved | 8 Jan 2026 | Creation of accessible roof terrace with privacy screening |
| 61 Hay's Mews, W1 | Change of Use | Approved | 6 Jan 2026 | Conversion of ground floor retail unit to residential dwelling |
| 1 Farm Street, W1 | Roof Terrace | Pending | 5 Jan 2026 | Formation of roof terrace at rear second floor level with glass balustrade |
| 59 Charles Street, W1 | Change of Use | Refused | 21 Oct 2025 | Conversion of ground floor retail unit to residential dwelling |
| 38 Park Street, W1 | Listed Building Consent | Approved | 4 Aug 2025 | Reinstatement of original period features including cornicing and fireplaces |
| 40 Chesterfield Hill, W1 | Full Refurbishment | Pending | 25 Jun 2025 | Comprehensive refurbishment retaining period details with contemporary additions |
| 26 Farm Street, W1 | Basement Conversion | Approved | 9 May 2025 | Conversion of existing cellar to habitable accommodation with new lightwell |
| 28 Chesterfield Hill, W1 | Loft Conversion | Approved | 19 Mar 2025 | Hip-to-gable loft conversion with new dormer to rear elevation |
| 27 Green Street, W1 | Listed Building Consent | Approved | 24 Feb 2025 | Reinstatement of original period features including cornicing and fireplaces |
| 80 Hill Street, W1 | Garden Room | Approved | 6 Jan 2025 | New garden studio with green roof for home working |
Mayfair has seen strong renovation activity over the past twelve months, with full refurbishments accounting for 17% of all planning applications. Roof Terraces follow at 17%, with listed building consents making up a further 17% of submissions. This pattern reflects the character of Mayfair's housing stock and the aspirations of homeowners in the W1 postcode.
As a designated conservation area, Mayfair requires all external alterations to be sympathetically designed and built using appropriate materials. Planning officers at Westminster Council pay close attention to proposals that affect the streetscape, particularly along prominent roads such as Mount Street and South Audley Street. Despite these additional requirements, our data shows a 72% approval rate for applications in the area — evidence that well-prepared submissions continue to succeed.
The most active streets for development in Mayfair include Mount Street, South Audley Street, Charles Street, where homeowners are investing in both extending and upgrading their properties. Full refurbishments and change-of-use applications reflect the mixed residential and commercial character of the area, with many conversions creating high-specification apartments.
Properties in Mayfair (W1) typically range from period terraces to substantial detached homes. Whether you are considering a straightforward loft conversion or a comprehensive basement dig, early engagement with Westminster Council's planning department — and appointing an architect familiar with local policy — will significantly improve your chances of a smooth approval. Our team maintains an outstanding track record across the W1 postcode.
Westminster Council manages planning applications across Mayfair and the wider borough. As a conservation area, Mayfair is subject to additional planning controls. Permitted development rights may be restricted under Article 4 directions, meaning proposals that would normally not require planning permission may need a formal application.
For advice on what you can build in Mayfair, see our Planning & Permissions guide. You can also review our planning track record to see our approval rates across London boroughs.
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